Sheet-metal gait



1. LEDWINKA.

SHEET METAL CAN.

APPLlcATloN FILED MAR` 24, 1920,

1,370, 1 34:. Patented Mar. 1, 1921.

este

JOSEPH LEDWINKA, OF PHILADELPHIA, PENNSYLVANIA.

SHEET-METAL CAN'.

To alZZ whom t may concern.'

Be it known that I, JosnrH LEDWINKA, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia, State of Pennsylvania, have made a certain new and useful Invention in Sheet- Metal Cans, of which the following is a specification.

This invention relates to sheet metal cans or containers especially adapted for use in handling and shipping various substances which are required to be shipped in sealed receptacles.

The object of the inventionvis-to provide a sheet metal can or receptacle which is vsimplein structure,'economical to manufacture, and strong and durable in use.

A further object of the invention is to provide a closureeor coverk for sheet metal cans or receptacles, and means for detachably securing the same in place to effect a tight joint.

A further object ofthe invention is to avoid the diliiculties heretofore encountered in the construction of sheet metal cans and closures therefor and-securing devices for securing the closure or cover to the can.

A further objectfof the invention is to provide a sheet metal can structure to which a label may be applied, and wherein the label is protected against dangerof defacement or injuryfin handling or transporting` the cans.

vOther objects of the invention will appear more fully hereinafter.

The invention consists substantially in the construction, combination, location, and relative arrangement of parts, all as will be more fully hereinafter set forth, as shown in the accompanying drawing, andr finally pointed out in the appended claims.

In the drawing,- i

Figure l is a viewpartly -in elevation, and partly in central longitudinal section, of a sheet metal can structure embodying the principles of my invention.

Fig; 2 is a broken detail view in perspective showing a portionof the open end of the can and the application thereto of a cover or closurein accordance with the principles of my invention. Y i

Fig 3 is a broken' detail viewy in section on .the "line 3, 8, Fig. l, looking in the direction of the arrows.

It has heretofore been proposed to form sheet metal cans or receptacles with a clo- Speccation of Letters Patent.

Patented Mar. 1,1921. i920. serial No. 368,266.

sure or top therefor, and to secure the clo- .sure or Cover by means of tongues formed integrally with the body of the can at `its open end which are threadedthrough slits formed in the edge or rim vof the .cover or top. In such a structure the dii'i'iculty is encountered in assembling the cover in place of securing accurate alinement of the slits or openings through the rim kof the cover through which the securing tongues or prongs are threaded, thereby consuming time in assembling' and materially addino to the cost of construction.` b

It is among the special purposes of my present invention to provide a structure of can and top or cover therefor in which the cover may be quickly and easily assembled in place without necessitating care or attention in securing registration or positioning of the top or cover, and wherein the top or cover may be quickly and easily applied and secured in position or detached and removed therefrom when required. The body 4 vof the can embodying v,my in` vention is formed in any suitable, convenient or well known way, into a cylindrical or other conveniently shaped structure, and secured at the edges thereof in any jconvenient or well known manner to produce a tight joint. To one end of the body l a closure or bottom member 5 is applied and secured permanently in any well known manner at its edges to one end of the body i to form 4a leak-proof joint.' At its other end the sheet metal forming the' body 4 is flanged or bent inwardly as' at 6 and then outwardly upon itself as at 7 to form a fold constituting an interiorly extending shoulder or flange. The outwardly bent portion 7 of the fold is then turned upwardly, or in prolongation with the body 4L', 'and at its' extremity is formed into a series 'of tongues 8. Each tongue terminates iiran outwardly or laterally extending flange" or `projection indicated at 20. Adapted to he 'applied to the open end of the body is a top or'cover 9. [it its peripheral edge the top' or cover' 9 is pressed outwardly away from the plainel of the body of the top or cover as indicated at l0 to form an interior channel, the open 'side of which presents downwardly toward the flange 6, 7, of the body, and adapted to coperate therewith to form a joint. At its eXtreme edge the metal of the top or cover 9 is bent upwardly or away from the plane of the outer surface of the top or cover indicated at 11, and thence is folded backwardly upon itself as at 12 to form an upstanding integral rib at the boundary edge of the top or cover.

In applying the top or cover to the body 4: said cover is merely placed in position with its interiorly presenting channel riin portion 10 positioned and supported upon the interior-ly extending flange 5, 7, of the body, and with the outwardly extending rib portion 11, 12, fitting against the inner wall of the extreme edge of the body portion 4. The tongues 8 are then bent or deflected over upon the rib 11, 12, thereby efficiently securing the cover in place. 1When the tongues 8 are thus bent over and upon the rib 11, 12, the terminal flange or projection 2f) of the tongues lies slightly above and parallel with the plane of the outer surface of the channel 10 of the cover so that by engaging a suitable tool beneath such flanges'or projections 20, they may be pried open so as to release their engagement over the rib 11, 12, thereby permitting the cover to be quickly and easily detached for removal from the can. If desired, and in order to insure a leak-proof joint of the top orv cover with the body, a suitable co1npressible packing ring or gasket 13 is positioned upon the supportingV rib 6, 7, and received in the interiorly presenting channel Y formed at the peripheral edge of the top or When the Ytongues 8 are clenched over the rib 11, 12, of the top or cover the packing ring or gasket 13 is compressed, thereby forming an efficient locked and leakproof joint.

If desired, and in order to afford strength and rigidity to the body of the can, suitable grooves llmaybe pressed annularly into such body, thereby forming strengthening projections in' such body.

In the handling and transportation of eontainersofthe nature to which my invention relates the labels customarily applied to such container or cans become injured or defaced throu h abrasion orY friction or otherwise. It is among the special purposes of my present invention to provide means whereby this difficulty is avoided, and in accomplishing the desired purposes I propose to locate the label indicated at 15 intermediate adjacent body ribs 14 whereby the label will be protected by reason of being located within the boundary of the projections formed by the adjacent grooves 14.V If desired, however, the body of the can may be formed with a depressed annular portion 16 in which the label is seated so as to liev within-the boundary of the exterior surface of the receptacle or container, thereby efficiently protectingV the Asame against possible defacement or injury while being handled or'transported. y

From the foregoing description itv will be seen that I provide an exceedingly simple, inexpensive, strong, durable, rugged and efficient container in which various materials may be packed and transported.

Having now set forth the objects and nature of my invention and a construction embodying the principles thereof, what I claim as new and useful and of my own invention and desire to secure by Letters Patent is,-

1. In a sheet metal can structure, a body portion having an inwardly extending integral flange adjacent to one end thereof, the metal of such body at said end beyond said flange being formed at the extremity thereof into tongues, in combination with a top or cover positioned wholly within the end of the body and supported upon said flange and having its peripheral edge formed with an upturned flange portion, said top or cover adapted to be held in place by bending said tongues inwardly over the upturned peripheral edge flange portion of said top or cover.

2. A sheet metal can structure having a body portion formed adjacent one end with an inwardly extending bent or folded portion of the metal thereof to forni an interior shoulder or flange, the extreme edge or end of said body portion being formed with tongues, in combination with a top or cover adapted to be positioned wholly within the open end of the body and supported upon said flange, the extreme peripheral edge of said top or cover formed with an upstanding flange, said cover adapted to be retained in position by elenching said tongues inwardly over said folded upstanding flange or edge.

3. In a sheet metal can structure, a body portion formed with an inwardly extending fold adjacent one end thereof to form a shoulder or interior flange, the extemity of the body portion being formed into tongues, in combination with a top or cover having an outwardly pressed channel at its peripheral edge adapted to be positioned above and supported upon said flange, the extremity of the peripheral edge of said top or cover being bent outwardly from the plane thereof and backwardly folded upon itself to form an upstanding rib over which said tongues are clenched to secure the top or cover in place.

4;. In a sheet metal can structure, a body portion formed with an inwardly extending fold adjacent one end thereof to form a shoulder or interior flange, the extremity of the body portion being formed into tongues, in combination with a top or cover having an outwardly pressed channel at its peripheral edge adapted to be positioned above and supported upon said flange, the extremity of the peripheral edge of said top or cover being bent outwardly from the plane thereof and backwardly folded upon ll (l itself to form an upstanding rib over which said tongues are clenched to secure the top or cover in place, and a compressible packing or gasket interposed between said fiange anld received in the open side of said channe a 5. In a sheet metal can structure, a body portion having an inwardly extending integral flange adjacent the end thereof, the metal of such bodv being at the extremity of such end formed into tongues, said tongues terminating in laterally extending flanges or projections, in combination with a top or cover positioned within the end of the body and supported upon said inwardly extending integral flange, and held in place by bending said tongues over the peripheral edge of said top or cover, the lateral anges or projections at the extremities of said tongues affording means to release said tongues from their engagement over the peripheral edge of the top or cover to permit detachment and removal of the latter.

6. In a sheet metal can structure, a body having an inwardly extending integral flange adjacent the end thereof, the extremity of said end being formed into tongues, said tongues terminating in laterally extending flanges, in combination with a top or cover supported at its peripheral edge upon said integral flange, and adapted to be detachably secured in place by bending said tongues over the perlpheral edge thereof, the flanges at the extremities of said tongues When bent over, lying above the plane of the outer surface of the top or cover.

In testimony whereof I have hereunto set my hand on this 15th day of March A. D,

JOSEPH LEDWINKA. 

